Disk-sharpening attachment for agricultural machines.



PATENTED AUG. 28, 1906. E. FOWLER.

DISK SHARPENING ATTACHMENT FOR AGRICULTURAL MACHINES.

APPLICATION FILED MAR. 29. 1908.

2 SHEETBBHBET 1.

PATBNTED AUG. 28, 1906.

E. FOWLER. DISK SHARPENING ATTAGHMBNTPOR AGRICULTURAL MACHINES.

APPLICATION FILED MAR. 29. 1806.

UNITED STATES PATENT OFFICE.

EDWARD FOWLER, OF CEDAR GROVE, GEORGIA.

'DlSK-SHARPENING ATTACHMENT FOR AGRICULTURAL MACHINES.

Specification of Letters Patent.

Patented Aug. 28, 1906.

Application filed March 29, 1906. Serial No. 308,730.

To all whom it away-concern:

Be it known that I, EDWARD FOWLER, a citizen of the United States, residing at Cedar Grove, in the county of Walker, State of Georgia, have invented certain new and use ful Improvements in Disk-Sharpening At tachments for Agricultural Machines, of which the following is a specification.

This invention relates to disk-sharpening attachments for agricultural machines-such as disk plows, disk barrows, and the like and more particularly to a sharpening attachment which operates during the use of the machine.

An object of the invention is to provide a mechanism which is supported upon the mounting by which the dis is secured to the machine-frame.

A further object is to drive the mechanism from the disk.

Still another object is to improve disksharpening mechanisms.

Other and further objects will a pear in the following description and will c more particularly pointed out in appended claims.

In the drawings, Figure 1 is a top plan of a portion of a disk plow to which my invention is applied. Fig. 2 is a rear elevation of my invention. Fig. 8 is a perspective view showing a means for rotatm the disk when removed from the plow. ig. 4 is a detail detached view of some of the parts of my invention. Fig. 5 is a section on line 5 5, Fig. 2. Fig. 6 is a section on line 6 6, Fig. 2, and Fig. 7 is a section on line 7 7, Fig. 2.

I herein illustrate and describe my inven tion as applied to a disk plow, such as described in my application, filed August 2,

1903, Serial No. 272,382; but it is to be un,

derstood that the same may be adapted for all kinds of disk agricultural machines or that the mechanism may be employed independently of any agricultural machine.

Referring particularly to the drawings, 1 indicates the plow-beam; 2, the seat; 3, the rear furrow-wheel; 4, the mounting for the rear furrow-wheel and the seat; 5, the unloWed-land wheel, and 6 the lever for adgusting the front furrow-wheel. (Not shown.

To the beam 1 is secured by bolts 7 the disk-mounting 8, which is provided with a journal-bearing 9, in which turns a bored tapering spindle 10, forming part of a casting which includes a bevel-gear 11, the front face of the casting being concaved at 12 to receive a concave disk 13. The disk is secured to the casting by an ordinary bolt 14 with nut and washer 15 or bya bolt 16, having a crankhandie l7 integral therewith, as shown in Fig. 3, or secured thereto in any other suitable manner, and by which the disk may be rotated and sharpened when the machine is not in 0 eration.

The isk-mounting 8 is further provided with a lug 18, having a perforation or boltopening, said mounting and its lug being provided with a guide-groove 19, in which works an offset portion on a shaft-sleeve 21, the offset portion being clamped to the mounting by a bolt 22, which asses through the perforation in lug 18 an the slot 20* in the offset portion, the purpose of the slot 20 being to permit the shaft casing to be moved toward the disk for a purpose to be hereinafter described.

The shaft-casing 21 has mounted therein a shaft 23, having at its lower end a bevel-gear 24 and at its upper end a ear 25, the said shaft being arranged radia to the disk, so that the bevel-gear 24 may mesh with the bevel-gear 11. The shaft-casin 21 is movable toward the disk to permit t e gear 11 to mesh with gear 24 when said gears become worn.

Swinging about the axis of the gear 25 is an oscillatory frame which comprises a sleeve 26 and a .J-shaped member 27, in the longer arm of which is journaled a sleeve 28, having a pinion 29 arranged between the two arms. Keyed in this sleeve 28, so as to move axially therethrough and projecting from both sides of the J-shapcd member, is a shaft 30. The lower end of shaft 30 is provided with screwthreads 31 and carries an emery-disk 44 or other abrasive device, the disk being held between a pair of nuts 32, which ermit the disk to be ad usted on the shaft. he upper end of the shaft 30 is provided with an annular flange 33, and between this flan e and the upper face of the )inion 29 is a he ic-al spring 34,which tends to old the emery-wheel above the edge of the cutting-disk 13.

Secured to the member 27 and surrounding the upper end of the shaft 30 is a tubular housing 35, which is bifurcated at its upper end and has a cam-lever 36 pivoted in the bifurcation. The cam-lever 36 is provided with a plurality of depressions or recesses 37 on its periphery, into any of which recesses the pointed upper end of the shaft 30 is adapted to enter. When the cam-lever is turned in one direction, it permits the shaft 30 to move axially and away from the disk edge under the action of spring 34, and when turned in the other direction the cam-lever forces the shaft toward the cutting edge and against the action of the spring. It is possible by this lever to sharpen a disk after it has become worn and when the diameter is less than a new disk. It is also possible to throw the emery-wheel or abrasive device out of action.

To hold the emery-Wheel yieldingly against the disk, I provide a helical spring 38, which surrounds a slide-rod 39 and abuts a tensionnut 40 on the rod, and a perforated In 41, swivelcd on the offset portion 20 of the shaftslee ve 21. The rod 39 Works loosely through the lug 41 and is pivoted at 42 to a lateral arm 43 on the sleeve 26 of the oscillatory frame.

It will be noted that all of the sharpening mechanism is carried entirely by the diskmounting, making it possible to construct a sharpening mechanism adapted for any make of machine. Further, the rotation of the abrasive device is positive and is geared directly to the disk.

When the disk rotates, the bevel-gear 11 transmits motion to shaft 23 through gear 24, shaft 23 transmits motion to sleeve 28 through gear 25 and pinion 29, and the sleeve transmits its motion to the emerydisk 44 to rotate the latter so that it rotates in a direction opposed to the direction of rotation of the cuttin -disk.

The dis -mountin also has secured to it a scraper-arm 45, which carries the usual scraper 46. The scraper is so disposed as not to interfere with the operation of the sharpening mechanism.

Having thus described my invention, what I claim, and desire to secure by Letters Patout, is

1. The combination with a disk-mounting constructed to be secured to a plow-beam, and a rotary disk carried thereb of a rotary sharpenin device carried by t e mounting and gears to the disk to be rotated.

2. The combination with a disk-mounting and a rotary abrasive member carried by the mounting, of means for securing the disk to the mounting, comprisi a bored spindle, a gear-wheel turning wit the spindle and geared to the rotary abrasive member, and a bolt assing through the spindle and holding the isk thereto.

3. The combination with a disk-mounting and a rotary abrasive member carried by the mounting, of a disk, a disk-spindle journaled in the housing, a gear-whee secured to the spindle to turn therewith, and connection between the gear-wheel and the rotary abrasive member to cause the member to rotate with the disk. M

4. The combination with a mounting constructed to be secured to a plow-beam and a rotary abrasive member, of a casting embodying a gear-wheel and disk-spindle journaled in the mounting, a disk carried by the spindle, and connection between the abrasive member and the gear-wheel.

5. The combination with a mounting construeted to be secured to a plowbeam, a diskspindle journaled in the mounting and a disk carried by the spindle, of an oscillatory frame carried by the mounting, a rotary abrasive member carried by the frame, and means acting on the oscillatory frame to yieldingly hold the abrasive member against the disk.

6. The combination with a mounting and a disk-spindle, of a shaft radiating from the spindle and geared thereto, a gear secured to t e shaft, a frame swinging about the shaft, a pinion carried by the frame and meshing with the gear, an abrasive member rotating with the inion, and a sprin acting on the swinging rame to hold it yie dingly against a disk on the disk-spindle.

7. The combination with a mounting and a disk-spindle, of a shaft radiating from the spindle and geared thereto, a gear secured to t e shaft, a swinging frame comprising a sleeve turning on the shaft and a \J-shaped member, a pinion carried by the d-shaped member and meshing with the gear, an abrasive member turning with the inion, and means acting on the frame to he (1 the abrasive member against the disk.

8. The combination with a mounting constructed to be attached to a plow-beam and a disk-spindle carried by the mounting, of an oscillatory or swinging frame carrie by the mounting, an abrasive member carried by the frame and cared to the disk-spindle, and means yieldin ly holdin the abrasive member a ainst a isk carried by the spindle.

9. he combination with a mounting and a disk-spindle, of an oscillatory or swinging frame, an abrasive member carried by the frame and geared to the disk-spindle, means yieldingly holding the abrasive member against a disk carried by the spindle, comprising a rod pivoted to the swingin frame, a

erforated stud swiveled to the dis -mountin and through which the rod works, and a he ical spring surrounding the rod and abutting the stud.

10. The combination with a mounting and a disk-spindle, of a gear turning with the s indle, an abrasive member, a radiatin sliaft to connect the abrasive member an the gear on the spindle, and means securing said shaft to the mountin said means being adjustable to permit the s aft to be moved to and from the gear.

11. The combination of the disk-mounting provided with a guide and a bolt-opening extendin through the guide, a disk-spindle journa ed in the mounting, a bevel-gear car ried by the spindle, an abrasive device, a shaft connecting the abrasive device and the bevel-gear, a pinion carried by the shaft to mesh With the gear, and means connecting the shaft to the mounting, slidable on the guide and comprising a part provided with a slot and a bolt passing through the slot and the bolt-opening in the mounting.

12. In a means for sharpening disks, the combination with a cutting-disk spindle, of a rotary abrasive disk geared to the s indle, a longitudinally-movable shaft to which the abrasive disk is secured, a spring tending to move the shaft in one direction, and means for moving it in the other direction against the action of the spring.

13. In a means for sharpening disks, the combination with a cutting-disk spindle, of a rotary abrasive disk geared to the s indle, a longitudinally-movable shaft to W 'ch the abrasive disk is secured, a spring tending to move the shaft in one direction, and a camlever for moving the shaft against the action of the s ring.

14. n a means for sharpening disks, the combination With a cutting-disk spindle, of a rotary abrasive disk geared to the s indle, a longitudinally-movable shaft to W iich the abrasive disk is secured, a spring tending to move the shaft in one direction, and a camlever for moving the shaft against the action of the spring, said lever being provided with recesses in its periphery.

15. The combination with a mounting, of a disk-spindle journaled in the mounting, a rotary abrasive member arranged to act on a disk carried by said s indle, a longitudinallymovable shaft by w ich the abrasive member is carried, a gear keyed to the shaft and permitting the axial movement thereof, means for rotating the ear, a flange on the shaft, a helical spring earing against the flange to hold it in one direction, and a cam lever to move the shaft in the other direction.

16. The combination with the disk-spindle, of a rotary abrasive member to act upon a disk carried by the spindle, means for effectin a movement of the member along its axis 0 rotation, a swinging frame on which the abrasive member is movable axially, and means acting on the frame for holding the abrasive member yieldingly against the disk.

17. The combination of a castin having a bored spindle, a convex face am? a bevelgear, and a sharpening mechanism cared to the gear and arranged to act on a dis carried by said casting.

EDWARD FOWLER.

In presence of- CHALLY BELL, OLIVER HENSON. 

